diff --git a/haskoin-store.cabal b/haskoin-store.cabal
--- a/haskoin-store.cabal
+++ b/haskoin-store.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           haskoin-store
-version:        0.40.5
+version:        0.40.6
 synopsis:       Storage and index for Bitcoin and Bitcoin Cash
 description:    Please see the README on GitHub at <https://github.com/haskoin/haskoin-store#readme>
 category:       Bitcoin, Finance, Network
diff --git a/src/Haskoin/Store/Cache.hs b/src/Haskoin/Store/Cache.hs
--- a/src/Haskoin/Store/Cache.hs
+++ b/src/Haskoin/Store/Cache.hs
@@ -923,7 +923,7 @@
     let opts = Redis.SetOpts { Redis.setSeconds = Nothing
                              , Redis.setMilliseconds = Just 500
                              , Redis.setCondition = Just Redis.Nx }
-    in void . runRedis $ Redis.setOpts cacheCoolKey "cool" opts
+    in void . runRedis $ Redis.setOpts cacheCoolKey "0" opts
 
 syncMempoolC :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
              => CacheX m ()